The relationship between the male and female may be long term.

Not a really significant difference between the species, but we females can live with- out it.

How does one tell the difference between human males and females?

Sexual activity between females was not mentioned in the law.

This means there is little difference between the males and females.

You have just described the relationship between males and females.

There is almost no size difference between males and females.

Physical fights between females are more likely to end in injury or death.

No differences in calls between males and females have been identified.

They particularly play a role during engagement between males and females.